Sound excluding ventilating window



Aug. 2, 1 938. E. T/FISK I 2,125,669

SOUND EXCLUDING VENTILATING WINDOW Filed Nov. l5, 1935 2 Sheet-Sheet 1Au 2, 1938. a. T. FISK 2,125,669 I SOUND EXCLUDING VENTILATING WINDOWFiiea Nov. 15. 1955 i 2 Sheets-Sheet} 1 I Patented Aug. 2, 1938 PATENTorriee SOUND EXCLUDING VENTILATING WINDOW Ernest Thomas Fisk, Sydney,New South Wales,

Australia Application November 15, 1935, Serial No. 50,038 In AustraliaDecember 8, 1934.

1 Claim.

This invention relates to window fittings adapted for the exclusion ofsound without restricting ventilation.

The invention has for its object the provision of effective means forexcluding noise by reflecting and/or absorbing the sound waves, whilstmaintaining efiicient ventilation through a window opening; formaintaining ventilation during wet and windy weather; and for providingsimple means for the safe and effective cleaning of thewindow; alsoreducing transmission of dust through the aperture.

Provision is made for the reflection of part of the sound waves whichreach the window from any angle, and for reduction of the remainder byabsorption or dampening.

In order that the invention may be clearly understood reference will nowbe made, by way of example, to the accompanying drawings in .Which:

Figure 1 is a vertical sectional view of one arrangement of soundexcluding ventilating window.

Figure 2 is a modification of the sash arrangements shown in Figure 1.

Figure 3 shows a construction dow sashes only, and

Figure 4 is a further construction with three window sashes.

Referring to the embodiment of the invention seen in Figure 1, II showsa window opening in which two vertical hinged sashes l3 and it arefitted in parallel spaced relation to one another soas to form an aircell between them, with an opening l5 above the sashes and an opening [6below the sashes. The sashes are respectively hinged to opposite sidesof the window opening to swing inward, and are provided with suitablestops iii and latches ill. The drawings show the hinges il' ofthe sashl3 and the stops l9 and latch it of the sash I4. n the inside of thewindow opening two short sashes 2| and 22 are horizontally hinged at 23and 24 respectively. These sashes are adapted to swing. inward as inwithtwo windicated in dotted lines to facilitate cleaning and to provideclearance for the sashes l3 and M to swing inward. They are maintainedin vertical alignment by any suitable means and their vertical height ispreferably not less than one quarter the height of the window opening.

A roller blind 36 may be fitted on the sash I3 and provided with meansfor supporting it in position when drawn.

Immediately behind the sashes 2i and 22, two sashes 25 and 26 areslidably positioned, and

suspended in balance by cords 21 which are reeved over pulleys 28mounted on opposite sides of the window opening. The cords 27 areconnected to the upper sash 25 at 29, and are attached by a hook 30 tosuitable catches ti on the lower sash. The sashes 25 and 26 are of thesame vertical height as the sashes 2! and 22, and when the sashes 25 and26 are moved into engagement at the horizontal centre line of the Windowopening, they combine with the sashes El and 22 to completely close thewindow opening." For cleaning purposes thesashes 25 and 25 may beremoved by unhooking the cords 2! from the catch 3|. Small rollable sunblinds 48 may be fitted on the inner faces of the sashes 2| and 22. Nearthe outer face of the window opening are positioned two sashes 32 and33, similar to the sashes 2i and 22. The sashes 32-33 may be demountablyfitted for cleaning, or they may be hinged at 34 and 35 toswing'inwardly as shown in the dotted lines 31- Drain holes 38 areprovided in the sill for the drainage of water which may enter thewindow opening II.

The faces it of the reveals ii of the head and d2 of the sill arepreferably covered with a suitable sound absorbing material.

Sound waves approaching the window opening from the direction indicatedby the arrow 45 are deflected upwardly by the sashes 33, 32 and Hi. Someof thesewaves are deflected by the sash l 4 onto the inner side of thesash 32 by which they are again deflected onto the face ll where theyare mostly absorbed, the balance being trapped between the panes Hi, l3and 25.

Sound waves approaching the aperture ll from the direction indicated bythe arrow 46 are similarly reflected and absorbed by the sashes andsurfaces in the lower portion of the window opening.

In some cases it may be suficient to dispense with one of the verticallyhinged sashes.

A further embodiment of the. invention is shown in Figure 2 in which 5!is a vertical sec:

tion of a window opening in which two vertical hinged main sashes 53 and5d are fitted in parallel spaced relation to one another to form an aircell between them, the sash 53 being displaced downwardly to contactwith the sill 82 and leaving a space 55 above it, and the sash 5% being5 v displaced upwardly to contact with the head 8|, leaving the space 56below it.

The sashes are respectively hinged to opposite sides of the windowopening to swing inwardly for cleaning purposes, and are provided with55swing inwardly. They are maintained in vertical alignment by anysuitable means.

Immediately behind the sashes 6 I and 62 two sub-sashes 65 and 66 areslidably positioned and suspended in balance by cords 61 which arereeved over pulleys 68 mounted on opposite sides of the window opening.The cords 61 are connected to the upper sash 65 at 69 and are attachedby hooks I to suitable catches II on the lower sash. The sashes 65 and66 are of the same vertical height as the sashes SI and 62, and when thesashes 65 and 66 are moved into engagement at the horizontal centre lineof the window opening, the four sashes combined completely close thewindow opening. For cleaning purposes the sashes 65 and 66 may beremoved by unhooking the cords 61 from the catches II. Near the outerface of the window opening are positioned two sashes I2 and I3,preferably similar to the sashes 6! and 62, which may be demountable forcleaning, or they may be hinged at I4 and 15 to swing inwardly as shownin the dotted lines 11. r

The vertical height of the openings 55 and 56 should be preferably lessthan the respective vertical height of the sashes 65 and I3. 7

A roller blind I6 may be fitted on the sash 53 vertically orhorizontally with means for supporting it in position when drawn. Smallroller blinds 80 may be fitted on the inner faces of either or both thesashes 6| and 62. I Drain holes I8 are provided in the sill for thedischarge of water which may enter the window opening. I

The faces 52 of the reveals,'8l of the head and 82 of thesill arepreferably covered with a suitable sound absorbing material.

Sound waves approaching the window opening from the direction of thearrow 85 are reflected upwardly by the sashes I3, 12 and 54. Some ofthese waves are reflected into; the pocket formed between the sashes I2and 54 and the head 8|, and there dampened or absorbed. Some of thewaves are reflected upwardly and, outwardly.

Sound waves approaching the window opening from the direction of thearrow 86 are refiected downwardly from the sashes I2, 54 and I3. Some ofthese waves strike the sill 82 in the clearance 56 under the sash 54. Ofthese waves the unabsorbed portions oscillate between the sashes 53 and54 with diminishing amplitude and are mainly dampened before passing thespace Sound waves approaching in a horizontal direction approximately atright angles to the sashes, either frontally or laterally, are baffledby the plurality of sashes from penetrating to the interior. a

As an alternative arrangement the relative positions of sashes 54 and 53may be changed so that 54 extends from the sill upward and sash 53extends from the head downward.

In a further development of the arrangement according to Figure 2 theouter panel I2 or 13 or both I2 and I3 may be dispensed with. In thelatter case sound waves arriving from outside are partially reflected bythe panels 53 and 54 and dampened or absorbed in the space between thosepanels.

The panels 53 and 54 hinged to the top and bottom of the frame or anysuitable combination of such hinging positions may be employed.

A further embodiment of the invention is shown in Figure 3 in which IOIis a Window opening having a vertical sash I02 suspended from the headI06 by a hinge I03, and occupying the full width of the opening and thegreater portion of the height. A second sash I08 is supported on thesill I I0 on a hinge I 09. A sunshade I0! is mounted on a roller I54which is fitted to the top rail of the sash I02, and a sunshade III ismounted on a roller H which is fitted on the top rail of the sash I08.The two sunshades I01 and III together provide shade protection for theopening, but alternatively adequate shade protection might be secured bya single sunshade H2. The sashes are normally in parallel spacedrelation forming an air cell space therebetween and may be connected tomove together by means of linkage for the reduction of the opening orcomplete closure of the window by inclination of the sashes towards oneanother, until in contact, either or both sashes being moved. Inaddition to providing flexibility for closure of the window, the hingesI03 and I09 permit of the necessary in-swinging of the sashes forcleaning purposes. The head I06, reveals H4, and sill III) arepreferably faced with a suitable sound absorbing material I05.

A modification of the arrangement according to Figure 3 is shown inFigure 4 in which a sash I2I is positioned fixedly on the sill III), asecond sash I22 is fixedly positioned on the head I06, and a third sashI25 is hingedly mounted on the sill preferably at the interior side ofthe window opening. Closure or partial closure may be efiected byswinging sash I24 towards sash I22 (clearance being provided) until theycontact at I25, a suitable step-by-step locking device being used toretain the sash I24 at any desired angle. The window opening is facedwith sound absorbing material, and sunshades I01 and I I! may be fittedas in the previous case. The sashes IZI and I22 may be hinged, or may beadapted for slip out removal from the opening to facilitate cleaning.

The sashes may be mounted in the window openings in reverse of thepositions shown in Figure 4, that is to say with the open spaces belowwhere in the drawings they are shown above the sash and vice versa.

Various modifications of the arrangements hereby described orillustrated may be employed which come within the scope of thisinvention. Important features of the invention are to provide aplurality of vertically disposed and horizontally separated glazedpanels or sashes fitted into a window frame in such a manner as to causeventilating currents to change direction in passing through the apertureand to cause sound waves to be partially or wholly reflected by theglazed panels and to be partially or wholly dampened or absorbed in thevertical spaces between the glazed panels; also to make a practicalstructure in-which opening and closing to the ventilation space may befacilitated, and cleaning may be simplified.

It will be clear that one or more of the panels may be fitted atan'angle from the vertical without departing from the essential featuresof this invention although the simple vertical position is preferred.Variations in the described methods of opening and closing the windowfor ventilation may also be made without departing from the scope ofthis invention.

While the main sashes are described as being vertically disposed it isto be understood that they may be inclined and arranged accordinglywhere local circumstances require it. Also some or all the sashes may beopaque.

I claim:

A window fitment adapted to be arranged in an aperture comprising incombination, a window frame, two vertically disposed non-sliding glazedpanels arranged in said frame, one panel fitting three sides of theframe leaving an opening between the top thereof and the frame, theother panel fitting three sides of the frame leaving an opening betweenthe bottom thereof and the frame, two main panels arranged in the framein a spaced relation with respect to each other, both of said mainpanels being displaced with respect to said first mentioned panels, eachof said main panels fitting opposite vertical sides of the frame, andeach of said main panels being dimensioned to provide an opening betweenthe top thereof and the frame and an opening between the bottom thereofand the frame.

ERNEST THOMAS FISK.

